Oracle 1Z0-580 PDF Exam Questions:

You can display information about snapshots, boot environments, and datasets that were created by the beadm command by using the beadm list subcommand. The beadm list command output also displays boot environments that are created by the pkg command.

The beadm list command syntax is:

Syntax: beadm list [-a | [-ds] [-H] [BeName]

The command lists information about the existing boot environment. To view information for a specific boot environment, replace BeName with a boot environment name. If a specific boot environment is not specified, the command lists information about all boot environments. The default is to list boot environments without additional information.

-a -- Lists all available information about the boot environment. This information includes subordinate datasets and snapshots.

-d -- Lists information about all subordinate datasets that belong to the boot environment.

-s -- Lists information about the snapshots of the boot environment.

-H -- Prevents listing header information. Each field in the output is separated by a semicolon.

As per exhibit these are the two files in the netboot directory.

Note:

*Missing argument is:

file=wanbootCGI-URL

Specifies the URL of the wanboot-cgi program on the web server

* During the installation, WAN boot refers to the contents of the /etc/netboot hierarchy on the web server for instructions about how to perform the installation. This directory contains the configuration information, private key, digital certificate, and certificate authority required for a WAN boot installation. During the installation, the wanboot-cgi program converts this information into the WAN boot file system. The wanboot-cgi program then transmits the WAN boot file system to the client.

How to Use DTrace in a Non-global Zone

1. Use the zonecfg limitpriv property to add the dtrace_proc and dtrace_user privileges.

global# zonecfg -z my-zone

zonecfg:my-zone> set limitpriv='default,dtrace_proc,dtrace_user'

zonecfg:my-zone> exit

Note --

Depending on your requirements, you can add either privilege, or both privileges.

2. Boot the zone.

3. global# zoneadm -z my-zone boot

Log in to the zone.

global# zlogin my-zone

4. Run the DTrace program.

my-zone# dtrace -l

Note:

* Oracle Solaris DTrace is a comprehensive, advanced tracing tool for troubleshooting systemic problems in real time.

* DTrace helps you understand a software system by enabling you to dynamically modify the operating system kernel and user processes to record additional data that you specify at locations of interest, called probes.

Creating a ZFS Storage Pool with Cache Devices

You can create a storage pool with cache devices to cache storage pool data. For example:

# zpool create tank mirror c2t0d0 c2t1d0 c2t3d0 cache c2t5d0 c2t8d0

Note:

* Creating a Basic Storage Pool

The following command creates a new pool named tank that consists of the disks c1t0d0 and c1t1d0:

# zpool create tank c1t0d0 c1t1d0

These whole disks are found in the /dev/dsk directory and are labelled appropriately by ZFS to contain a single, large slice. Data is dynamically striped across both disks.

* Creating a Mirrored Storage Pool

To create a mirrored pool, use the mirror keyword, followed by any number of storage devices that will comprise the mirror. Multiple mirrors can be specified by repeating the mirror keyword on the command line. The following command creates a pool with two, two-way mirrors:

# zpool create tank mirror c1d0 c2d0 mirror c3d0 c4d0

Updating all of the packages on your installed system -- To update all of the packages on your system that have available updates, use the pkg update command, as follows:

# pkg update

Running this command updates packages that you might not otherwise consider updating, for example, kernel components and other low-level system packages.